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Chemistry

Chemistry
The percentage of Nitrogen in Air is

78.03
85.02
0.03
0.94

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Chemistry
Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants

A B C 2 3 1
A B C 2 1 3
A B C3 2 1
A B C 3 1 2

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Chemistry
The metal that is used as a catalyst in the hydrogenation of oils is

Ni
Cu
Pb
Pt

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Chemistry
Which of the following is not a derivative of barbituric acid

Amytal
Equanil
Veronal
Nembutal

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Chemistry
The name of unreactive gas is

Hydrogen
Oxygen
Carbon dioxide
Nitrogen

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Chemistry
The greenhouse effect is caused by the higher level of which gas in the atmosphere ?

Nitrous oxide
Carbon monoxide
Carbon dioxide
Sulphur dioxide

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